config: use 'message from' instead of 'this is a call from' during vm message playback dialog

conf/vanilla/lang/en/vm/sounds.xml

@@ -334,7 +334,7 @@
   <macro name="voicemail_say_phone_number">
     <input pattern="^000|^$|^[Aa]non|^[Pp]rivate" break_on_match="true">
       <match>
-        <action function="play-file" data="ivr/ivr-this_is_a_call_from.wav"/>
+        <action function="play-file" data="voicemail/vm-message_from.wav"/>
         <action function="execute" data="sleep(100)"/>
         <action function="play-file" data="ivr/ivr-anonymous_caller.wav"/>
         <action function="execute" data="sleep(500)"/>
@@ -342,7 +342,7 @@
     </input>
     <input pattern="^(.*)$">
       <match>
-        <action function="play-file" data="ivr/ivr-this_is_a_call_from.wav"/>
+        <action function="play-file" data="voicemail/vm-message_from.wav"/>
         <action function="execute" data="sleep(100)"/>
         <action function="say" data="$1" method="pronounced" type="name_spelled"/>
         <action function="execute" data="sleep(500)"/>